1 //===- Formatters.cpp -----------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "llvm/DebugInfo/CodeView/Formatters.h"
10 #include "llvm/ADT/ArrayRef.h"
11 #include "llvm/DebugInfo/CodeView/GUID.h"
12 #include "llvm/Support/raw_ostream.h"
13 #include <algorithm>
14 #include <cassert>
15 
16 using namespace llvm;
17 using namespace llvm::codeview;
18 using namespace llvm::codeview::detail;
19 
GuidAdapter(StringRef Guid)20 GuidAdapter::GuidAdapter(StringRef Guid)
21     : FormatAdapter(makeArrayRef(Guid.bytes_begin(), Guid.bytes_end())) {}
22 
GuidAdapter(ArrayRef<uint8_t> Guid)23 GuidAdapter::GuidAdapter(ArrayRef<uint8_t> Guid)
24     : FormatAdapter(std::move(Guid)) {}
25 
format(raw_ostream & Stream,StringRef Style)26 void GuidAdapter::format(raw_ostream &Stream, StringRef Style) {
27   static const char *Lookup = "0123456789ABCDEF";
28 
29   assert(Item.size() == 16 && "Expected 16-byte GUID");
30   Stream << "{";
31   for (int i = 0; i < 16;) {
32     uint8_t Byte = Item[i];
33     uint8_t HighNibble = (Byte >> 4) & 0xF;
34     uint8_t LowNibble = Byte & 0xF;
35     Stream << Lookup[HighNibble] << Lookup[LowNibble];
36     ++i;
37     if (i >= 4 && i <= 10 && i % 2 == 0)
38       Stream << "-";
39   }
40   Stream << "}";
41 }
42 
operator <<(raw_ostream & OS,const GUID & Guid)43 raw_ostream &llvm::codeview::operator<<(raw_ostream &OS, const GUID &Guid) {
44   codeview::detail::GuidAdapter A(Guid.Guid);
45   A.format(OS, "");
46   return OS;
47 }
48